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OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Components of accumulated other comprehensive loss, net of tax [Abstract]      
Net unrealized gain (loss) on securities available for sale $ 2,899 $ (1,232)  
Tax effect (609) 259  
Net -of-tax amount 2,290 (973)  
Unrecognized pension costs (3,695) (3,731)  
Tax effect 776 783  
Net -of-tax amount (2,919) (2,948)  
Total accumulated other comprehensive loss (629) (3,921)  
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance 139,229 129,011 $ 123,268
Change in Accounting policy for equity securities   1 0
Other comprehensive income (loss) before reclassifications (net of tax) 3,097 (686) (912)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) 195 162 (535)
Net other comprehensive income (loss) 3,292 (524) (1,447)
Change in other comprehensive income due to change in the federal tax rate     0
Balance 154,774 139,229 129,011
Accumulated Other Comprehensive Income (Loss) [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance (3,921) (3,398) (1,392)
Change in Accounting policy for equity securities     1
Net other comprehensive income (loss) 3,292 (524) (1,447)
Change in other comprehensive income due to change in the federal tax rate     (559)
Balance (629) (3,921) (3,398)
Unrealized Gain (Loss) on Available For Sale Securities [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance [1] (973) (269) 1,306
Change in Accounting policy for equity securities [1]   1  
Other comprehensive income (loss) before reclassifications (net of tax) [1] 3,283 (720) (847)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) [1] (20) 15 (683)
Net other comprehensive income (loss) [1] 3,263 (705) (1,530)
Change in other comprehensive income due to change in the federal tax rate [1]     (45)
Balance [1] 2,290 (973) (269)
Defined Benefit Pension Items [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance [1] (2,948) (3,129) (2,698)
Change in Accounting policy for equity securities [1]   0  
Other comprehensive income (loss) before reclassifications (net of tax) [1] (186) 34 (65)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) [1] 215 147 148
Net other comprehensive income (loss) [1] 29 181 83
Change in other comprehensive income due to change in the federal tax rate [1]     (514)
Balance [1] $ (2,919) $ (2,948) $ (3,129)
[1] Amounts in parentheses indicate debits